Table 1.

Demographics at study entry of patients with RA, AS, PsA, SLE, SSc and age-matched and gender-matched individuals from the general population free of systemic rheumatic disease

	RA		AS		PsA		SLE		SSc
	Patients	General population	Patients	General population	Patients	General population	Patients	General population	Patients	General population
N	42 735	213 675	9707	48 535	13 779	68 895	10 440	52 200	2277	11 385
Female gender N (%)	33 641 (79)	168 205 (79)	4163 (43)	20 815 (43)	7565 (55)	37 825 (55)	9315 (89)	46 575 (89)	1998 (88)	9990 (88)
Median (IQR) age in years	64 (54–73)		47 (38–56)		54 (45–64)		53 (42–64)		59 (49–68)

AS, ankylosing Spondylitis; N, number; PsA, psoriatic arthritis; RA, rheumatoid arthritis; SLE, systemic lupus erythematosus; SSc, systemic sclerosis.